Cancer is among the of death in adult males in the U.S. While a healthy diet can lower the risk of developing certain cancers, other factors like genes can play a larger role. Once cancer spreads, it can be difficult to treat.

Knowing early symptoms can help you seek treatment sooner to better your chances of remission. Early symptoms of cancer in men include:

bowel changes

rectal bleeding

urinary changes

blood in urine

persistent back pain

unusual coughing

testicular lumps

excessive fatigue

unexplained weight loss

lumps in breast

Continue reading about these symptoms to find out what to look out for and what you should discuss with your doctor right away.

The occasional bowel problem is normal, but changes in your bowels may indicate either colon or rectal cancer. These are collectively called colorectal cancers. Colon cancer can develop in any part of your colon, while rectal cancer affects your rectum, which connects the colon to the anus.

Rectal bleeding may be an early sign of rectal cancer. This is especially concerning if the bleeding persists or if you’re found to have iron deficiency anemia due to blood loss. You may also notice blood in your stools.

Although there are other more common causes of rectal bleeding like hemorrhoids, you shouldn’t try to diagnose yourself if you’re having these symptoms. Talk to your doctor about your concerns. You should get regular colon cancer screenings starting at age 50.

Back pain is a common cause of disability, but few men realize that it may be a symptom of cancer. Symptoms of cancer may not show until it has spread to other parts of your body, such as the bones of your spine. For example, prostate cancer is especially prone to spread to the bones and may cause these symptoms within your hip bones and lower back.

Coughing isn’t exclusive to smokers or to people with a cold or allergies. A persistent cough is an early sign of lung cancer. If you don’t have any other related symptoms, such as a stuffy nose or fever, the cough probably isn’t due to a virus or infection.

Coughing accompanied with bloody mucus is also associated with lung cancer in men.

Fatigue can be related to a number of chronic illnesses and medical disorders. Excessive fatigue is your body’s way of telling you that something just isn’t right. As cancer cells grow and reproduce, your body may start to feel run down.

Fatigue is a common symptom of various cancers. See your doctor if you have excessive tiredness that doesn’t go away after a good night’s sleep.

It becomes more difficult to maintain your weight as you age, so you might consider weight loss as a positive thing. But sudden and unexplained weight loss can indicate a serious health problem, including almost any type of cancer.

If you rapidly lose weight without changing your diet or how much you exercise, discuss this with your doctor.

Breast cancer isn’t exclusive to women. Men also need to be on guard and check for suspicious lumps in the breast area. This is the earliest detectable symptom of male breast cancer. Call your doctor immediately for testing if you notice a lump.

Genes can play a role in male breast cancer, but it may also occur due to exposure to radiation or high estrogen levels. Breast lumps are most commonly found in men in their 60s.

Many cancers are difficult to detect in the earliest stages, but some may cause noticeable differences. Knowing the most common cancer symptoms is vital to obtaining a prompt diagnosis. Still, the exact signs and symptoms of cancer can vary. As a rule of thumb, you should always see your doctor if you suspect something isn’t right.